senditnow.com
their 48hr is £10.99 and £50 compensation, can be increased to something silly like £2000 for an extra £1
But!
Their next day by noon is £12.99 and includes compensation up to £200!
So that is like £11.99 for the 48hr with increased compensation, or just £1 more @ £12.99 for next day by noon with already £200 compensation.
You just can't beat that!
I used them for a frame and it was a parcel force van turned up to collect it.
I'd use them everytime going by mine and others experience.